diff --git a/STMonadTrans.cabal b/STMonadTrans.cabal
--- a/STMonadTrans.cabal
+++ b/STMonadTrans.cabal
@@ -1,6 +1,6 @@
 cabal-version:  1.18
 name:           STMonadTrans
-version:        0.4.8
+version:        0.4.8.1
 license:        BSD3
 license-file:   LICENSE
 author:         Josef Svenningsson
@@ -21,8 +21,11 @@
    Maybe and combinations of their corresponding monad transformers.
 
 Tested-With:
-  GHC == 9.8.1
-  GHC == 9.6.3
+  GHC == 9.14.1
+  GHC == 9.12.2
+  GHC == 9.10.2
+  GHC == 9.8.4
+  GHC == 9.6.7
   GHC == 9.4.8
   GHC == 9.2.8
   GHC == 9.0.2
@@ -45,7 +48,6 @@
   default-language: Haskell2010
   build-depends:
       base         >= 4.9      && < 5
-    , transformers >= 0.2.0.0  && < 0.7
     , mtl          >= 1.1
     , array
 
@@ -79,5 +81,5 @@
     , base
     , transformers
     , tasty            >= 0.11.0.4 && < 1.6
-    , tasty-quickcheck >= 0.8.4    && < 0.11
+    , tasty-quickcheck >= 0.8.4    && < 1
     , tasty-hunit      >= 0.9.2    && < 0.11
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,4 +1,9 @@
-0.4.8 -- 2023-01-04
+0.4.8.1 -- 2025-08-26
+
+  * Remove `transformers` as direct dependency (fixing `-Werror=unused-packages`).
+  * Tested with GHC 8.0.2 - 9.14 alpha1.
+
+0.4.8 -- 2024-01-04
 
   * Added `Alternative` instance for `STT`, by William Rusnack
     (PR [#33](https://github.com/josefs/STMonadTrans/pull/33)).